RFR: 8343317: Extend test generation tool to handle APX NDD/NF flavor of instructions [v4]

[hanklo6]

> Extend test generation tool and gtest (added as part of https://bugs.openjdk.org/browse/JDK-8339507) to handle Intel APX NDD/NF instructions.
> 
> Intel Advanced Performance Extensions (APX) adds non destructive destination (NDD) and no flags (NF) flavor for the scalar instructions through EVEX encoding. For more information about APX, see https://www.intel.com/content/www/us/en/developer/articles/technical/advanced-performance-extensions-apx.html.

hanklo6 has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:

 - Update assembler test output labels for clarity
 - Merge branch 'master' of https://git.openjdk.java.net/jdk into ndd-nf-test
 - Regenerate asmtest.out.h
 - Use load form
 - Add seed for random
 - Add popcnt feature
 - Add ndd and nf tests

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21795/files
  - new: https://git.openjdk.org/jdk/pull/21795/files/14e4bacb..082653c7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21795&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21795&range=02-03

  Stats: 190426 lines in 1803 files changed: 118245 ins; 50723 del; 21458 mod
  Patch: https://git.openjdk.org/jdk/pull/21795.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21795/head:pull/21795

PR: https://git.openjdk.org/jdk/pull/21795